rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=663/1/0x4000000000000000 softirq=16338/16340 fqs=5249 
	(detected by 1, t=10502 jiffies, g=22273, q=921)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7624 Comm: syz.7.909 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:224 [inline]
RIP: 0010:pvclock_clocksource_read+0xe7/0x760 arch/x86/kernel/pvclock.c:76
Code: df 48 89 54 24 38 4c 89 74 24 28 42 0f b6 04 22 84 c0 0f 85 45 01 00 00 43 0f b6 04 26 84 c0 0f 85 7f 01 00 00 8b 1f 0f 01 f9 <66> 90 48 89 d5 48 8b 8c 24 90 00 00 00 42 0f b6 0c 21 84 c9 0f 85
RSP: 0018:ffffc90000007570 EFLAGS: 00000046
RAX: 000000004d5167a6 RBX: 0000000000000006 RCX: 0000000000000000
RDX: 0000000000000093 RSI: ffffffff8eebf01c RDI: ffffffff8eebf000
RBP: 0000000000010000 R08: ffffffff8eebf008 R09: ffffffff8eebf018
R10: ffffffff8eebf010 R11: ffffffff8eebf003 R12: dffffc0000000000
R13: 0000000000000000 R14: 1ffffffff1dd7e00 R15: ffffffff8bbc0820
FS:  00007fed041df6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed041bdf98 CR3: 000000005e4d3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:61
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000077a0 EFLAGS: 00000206
RAX: 9b93f29b1c808000 RBX: 1ffff92000000ef8 RCX: 9b93f29b1c808000
RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800
RBP: ffffc90000007880 R08: dffffc0000000000 R09: fffffbfff1ff5439
R10: fffffbfff1ff5439 R11: 1ffffffff1ff5438 R12: ffffffff8c120c00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 ndisc_send_skb+0xdc4/0x14a0 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3956
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0x105a/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: 29 e8 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 4d 8d 74 45 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 27 49 63 06 4c 01 f0 49 8d 4e 04 48 39 e8 4c
RSP: 0018:ffffc9000305ee28 EFLAGS: 00000a03
RAX: 1ffffffff1afd1fe RBX: ffffc9000305eee8 RCX: dffffc0000000000
RDX: ffffffff8d7e8ff4 RSI: ffffffff8ded6de0 RDI: ffffffff8134794c
RBP: ffffffff81bc198e R08: 0000000000000003 R09: 0000000000000000
R10: fffff5200060bde9 R11: 1ffff9200060bde7 R12: ffffffff8d7e8ff4
R13: ffffffff8d7e8ff4 R14: ffffffff8d7e8ff4 R15: ffffffff8d7e8ff4
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_krealloc+0x12f/0x1b0 mm/kasan/common.c:581
 kasan_krealloc include/linux/kasan.h:284 [inline]
 __do_krealloc mm/slab_common.c:1240 [inline]
 krealloc+0xb1/0xf0 mm/slab_common.c:1277
 push_jmp_history kernel/bpf/verifier.c:2125 [inline]
 is_state_visited kernel/bpf/verifier.c:11082 [inline]
 do_check+0x2d3d/0xeac0 kernel/bpf/verifier.c:11222
 do_check_common+0xe67/0x16c0 kernel/bpf/verifier.c:13506
 do_check_main kernel/bpf/verifier.c:13569 [inline]
 bpf_check+0x31f3/0xf090 kernel/bpf/verifier.c:14140
 bpf_prog_load+0x1043/0x1550 kernel/bpf/syscall.c:2354
 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fed05f99749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fed041df038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fed061f0090 RCX: 00007fed05f99749
RDX: 0000000000000024 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007fed0601df91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fed061f0128 R14: 00007fed061f0090 R15: 00007ffe6ebb08e8
 </TASK>